Laplace Transform

Find the response y(t) of an LITC system described by the equation
[(d^2)y/(dt^2)] + 5[(dy)/(dt)] + 6y(t) = [(df)/(dt)] + f(t)
if the input f(t) = 3e^(-5t).u(t) and all the initial conditions are zero;
that is, the system is in zero-state.